Power and time efficient clock synchronization in Fiber Channel

In this paper, we introduce two methods to implement clock synchronization in fiber channel. One is based on ELS (extended link service) transmission and the other is based on primitive signal transmission. Compared with the method based on ELS transmission, the primitive method is at least 20 times faster and consumes less power. Furthermore, we propose an area efficient method to implement encoding and decoding procedure between neutral disparity character and binary clock synchronization data in primitive clock synchronization scheme. Utilizing the proposed method, we can reduce the area by 50.2% in decoding and 26.7% in encoding. At last, we implemented the primitive clock synchronization method in prototype chip fabricated in a 0.18 mum CMOS technology with six layers of metal and functioned well.